How many valence electrons does an atom of this element have : 2e-8e-8e2e?

Equations for which kinds of reactions are best balanced by the half-reaction method?

When the water turns blue, which has is most common

Which element is a liquid at 25 celsius degrees and 1.0 atm? (A) bromine (B) krypton (C) phosphorus (D) xenon

Which is a unit of density? A) cm3/g B) g/cm C) g/cm3 D) ml/g

In which of these situations would light slow down? A. from plastic to air B. from ice to water C. from a vacuum to air D. from glass to air

The two forms of oxygen, O2 (g) and O3 (g), have (1) different molecular structures and identical properties (2) different molecular structures and different properties (3) identical molecular structures and identical properties (4) identical

What is the difference between a distraction and a reaction

if carbon which has an electrongavity of 2.5 bonds with hydrogen, which has an electrongavity of 2.1, the bond between the two atoms will be classified as a (n) covalent bond

If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A. 12 atoms of carbon (C) B. 6 atoms of carbon (C) C. 3 atoms of carbon (C) D. 2 atoms of carbon (C)

Car Q and z are put though an endurance test to see if they can travel at 120 km/h for 5.0 hours. Each car has a 45-L fuel tank. Car z must stop to refuel after traveling for 4.2 hours. Car Q, however, travels for 5.4 hours before running out of gas.